Home / 72,080.90-108,121.10-19,490.38

Finding the Fourth Proportional to 72,080.90, 108,121.10 and 19,490.38

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Solution

The fourth proportional to 72,080.90, 108,121.10 and 19,490.38 is: 29,235.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,080.90 : 108,121.10 = 19,490.38 : x
  2. Step 2: Convert to fraction form
    72,080.90/108,121.10 = 19,490.38/x
  3. Step 3: Cross multiply
    72,080.90x = 108,121.10 × 19,490.38
  4. Step 4: Simplify right side
    72,080.90x = 2,107,321,227.57
  5. Step 5: Solve for x
    x = 2,107,321,227.57/72,080.90
  6. Step 6: Final answer
    x = 29,235.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.